Advertisement
CFD.D73
4-2. ELECTRICAL ADJUSTMENTS
TAPE RECORDER SECTION
PRECAUTION
l. Adjustments should be performed in the order
given.
Generally playback circuit adjustments should be
completed before performing recording circuit
adjustments.
2. Adjustments shouid be performed for both L ch
and R-ch.
Switches and controls should be set as follows
unless otherwise sPecified.
.
Positions of switches and control knobs
F U N C T I O N
. . . . . . .
T A P E
I S S . . .
. . . . . 2
M O D E .
. . . . .
?
G R A P H I C E Q U A L I Z E R .
. . . m e c h a n i c a l c e n t e r
voLUME
. . MIN
O d B - 0 . 7 7 5 V
Tape Speed Adiustment
Adjustment Proccdure:
- FWD playback state -
'€st ûpe
ws48A
(3 kHz. O dBl
spead checker
of
ftequency counter
PHONES
AdJustment Valuc: normal sPeed
Spsod Chcckrr
Frôquancy countel
-0.83V'
2.975 to 3,000 Hz
The frequency difference for REV side should
be within 1.37o (40 Hz').
Adjustment Locatlon: RV60l
Adjust the semi-fixed variable resistor
built in the motor.
(Adjust with inserting lhe screwdriver.
Tuning
clockwise makes the speed high.)
.
Standard input level
lneut Pin
Mrx Mtc
L I N Ê I N
Signal source impedance
300 {r
l 0 k n
Input signal level
2.5 mV
(-s0 dB)
0.436 V
(-5 dB)
Frequency
I kKz
I k H z
a Standard output level
Ontput Pin
SP OUT (L.RI
PHONES
Signal source impedance
4 f i
32 ç7
Output signal level
0.775 V
(0 dB)
0.245 V
(-10 dB)
Advertisement
